Loved it ! Very absurd and surprisingly engaging concept ! I particularly appreciated all the polish you did, particularly the procedural animations for the frog and the hats that pile up when you get to a checkpoint !
I love how alive the word is with these nice drawings and animations everywhere (I particularly like the birds in the background) and I completely feel the endless aspect of the game.
If I have to pick on a few things: I would have liked slightly more diversity in gameplay to keep me engaged a little bit more but considering all the polish you did I guess it was hard to find the time.
I would also have loved a "actual" background that varies significantly to get a real sense of progression. Finally, it may be just me, but I'm not completely sure the music fits to the game (even though it's a very fine music).
Overall, I really enjoyed the experience so thank you and nice job you all !